A pizza maker determined an annual profit in dollars from selling pizzas using f(n)=65n-0.004n^2 where `n` is the number of pizzas sold. What is the annual profit if the pizza maker sells 300 pizzas?
A- $18,500
B- $3,600
C- $7,800
D- $15,900
To find the annual profit when 300 pizzas are sold, we plug `n=300` into the profit function `f(n)=65n-0.004n^2`:
f(300) = 65(300) - 0.004(300)^2
f(300) = 19500 - 0.004(90000)
f(300) = 19500 - 360
f(300) = 19140
Therefore, the annual profit from selling 300 pizzas is $19,140. None of the given options match this result, but the closest option is D- $15,900.